<template>
  <div class="top">
    <div class="left">
      <span class="lbtn" @click="goHome">首页</span>
    </div>
    <div class="center">
      <div class="title">智慧旅游可视化大数据平台</div>
    </div>
    <div class="right">
      <span class="rbtn">统计报告</span>
      <span class="time">当前时间：{{ time }}</span>
    </div>
  </div>
</template>

<script lang="ts" setup>
import moment from 'moment'
import {ref,onMounted,onBeforeUnmount} from 'vue'

// 点击首页按钮回到首页 
import {useRouter} from 'vue-router'
// 获取路由器对象
let $router = useRouter()

// 存储当前的时间
let time = ref(moment().format('YYYY年MM月DD日 HH:mm:ss'))
let timer = ref(0)
// 按钮的点击的回调
const goHome = ()=>{
  $router.push('/home')
}

// 组件挂载完毕更新当前时间
onMounted(()=>{
  timer.value = setInterval(()=>{
   time.value = moment().format('YYYY年MM月DD日 HH:mm:ss')
  },1000)
})

onBeforeUnmount(()=>{
  clearInterval(timer.value)
})
</script>

<style scoped lang="scss">
.top{
  width:100%;
  height:40px;
  display:flex;
  .left{
    flex:1.5;
    background: url(../../images/dataScreen-header-left-bg.png) no-repeat;
    background-size:cover;
    .lbtn{
      width:150px;
      height:40px;
      float:right;
      background:url(../../images/dataScreen-header-btn-bg-l.png) no-repeat;
      background-size:100% 100%;
      text-align: center;
      line-height:40px;
      color:#29fcff;
      font-size:20px;
    }
  }
  .center{
    flex:3;
    .title{
      width:100%;
      height:74px;
      background:url(../../images/dataScreen-header-center-bg.png) no-repeat;
      background-size: 100% 100%;
      text-align: center;
      line-height:74px;
      color:#29fcff;
      font-size: 30px;
    }
  }
  .right{
    flex:1.5;
    background: url(../../images/dataScreen-header-left-bg.png) no-repeat;
    background-size:100% 100%;
    display:flex;
    justify-content: space-between;
    align-items:center;
    .rbtn{
      width:150px;
      height:40px;
      background:url(../../images/dataScreen-header-btn-bg-r.png) no-repeat;
      background-size:100% 100%;
      text-align: center;
      line-height: 40px;
      color:#29fcff;
      font-size:20px;
    }
    .time{
      color:#29fcff;
      margin-right:10px;
      font-size:18px;
    }
  }
}
</style>